Transmission engages and disengages periodically as i slow down or come to a stop. Shifts erratically while driving from 6 gear to 4th gear , and when accellerating it hesitates from 2nd to 3rd gear, then shifts hard to 4th gear where i have to press on the brake to stop it. My concern is when it down shifts hard while in traffic, almost got rear ended one time. Just not safe to drive, ive have this truck for less than 5 months now. Preowned with less than 100k miles, just doesnt make sense..